At least you're getting rid of it before it hurts you and you're looking for another fun car to race....
The aches & pains of aging simply
SUCK 
.
I've been working on one oy my old Motocycles and after a few hours my back is -so- crunchy/painful I can't even bathe ~ I clean up the tools and job site, take 800Mg of Ibuprofen and hit my recliner and pass out for a few hours, when I awake the pair has reduced sufficiently to shower and get some clean clothes on .
Don't ever quit .
My Sweet has rheumatoid arthritis on her left leg, she has a hard time walking many days now .
BTW : a nice queen size bed sheet over the recliner keeps the sweat off it .