I can't personally say one way or the other about a kit. As a rule, if you have enough money, time and knowledge anything is possible. What issues are you having with your stock setup?

No issues yet, I would like to make it more highway worthy & a 5 speed down the road & maybe upgrade the motor to a later model 6 cylinder and juice brakes. This way I won't have to hug the back roads.

Leave it stock and enjoy the scenery.

Tony

Agreed. It's only stock once. When I go to car shows, there might be 10 38 Chevys but the one everyone gathers around is the only one without a small block V8 and bucket seats, mine. With the 3.73 gears I can easily drive 60 MPH but prefer a more sedate 50 while soaking in the sights and sounds around me. We have a club member (who has yet to make the move to the new site) who regularly drove his stock 39 70+ MPH. Do you know what your gear ratio is?

After looking at the specs I see you likely have the 4.11 gear which would put you in the comfortable 50-60 MPH range. Still not bad.

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@tiny 

Absolutely true.

It IS only original once.

And that DOES seem to be what attracts the most interest.

One issue with adding a larger motor is that then you need bigger brakes to stop it.  You will also need to change the suspension to handle the added weight.  New transmission to handle the added power.  Different tires and rims to handle the higher speeds safely.  By this point the car may look close to what it did before but it will have a different feel and personality than it did before.  The car will drive like a different vehicle than it did before.  Before making a change ask yourself if you enjoy the ride the car brings or the looks of the car.

Victor,

I have owned my 1935 Chevy for 51 years. I have other old Chevys and also Model T Fords (don't tell any one else here on Chat about the Model Ts) Everything has original driveline and therefore goes too slow, by today's standards. I leave early, pick my route and enjoy every aspect of driving them. The sound, the smell, and the feeling that comes to me through the seat of my pants are all important parts of the experience, for me.

Once you start to modify your car, it is hard to find a stopping place. It's your car to do with as you please but I wanted to weigh in to discourage you from starting down a path of no return.

The simple answer your original question is that here is no "kit" for any of these modifications. 

Mike

@35mike I understand what your saying, When you live in the city & the country & county roads are no more it hard to keep up. I belong to a club that has mostly hot rods & it's hard to keep up. To many fast drivers in this world. I don't think there is a real slow lane on the freeways anymore.

The slow lane on the freeway is for funeral processions. The faster some go the more the slow lane gets used. So glad I have cows that live across the street, they mooove slowly.