Ok so right now my 77 K20 only has 33s on it, I sold my 38x15.50 gumbo mudders that came on the truck last year. So mud bog season is coming up and I can go mudding with worn out 33s. Plus my K20 looks silly on 33s. Anyways I have a set of 36x12.50 Goodyears, real worn. I went in to Les Schwab to mount them and instead they looked up my account and I have good credit there and they can order me 38x15.50 TSLs for 1500. Very very tempting!!!