Great job, car looks nice.
For heat in the grarage look at kerosene torpeto heaters.
My garage is 12 x 20 and last night I warmed mine from 20F to 80F in under 10 minutes.
Mine is a 155,000 btu model.
I already have a big billy bad *** torpedo ready heater....I think its atleast 200,000 btu.....the problem is that my garage is to dang small to have it set up and to have room to get around...plus I don't have the extra cash to put kerosene in the hog right now.
But I will get back to work on it soon ...just waiting until after the holidays when cash won't be as tight.