Guys i need some help. I want to put the biggest tire under my quarters without tubbing. I'm building a 69 coupe and it won't be stock in any way. I'm hoping to get about 500hp on a smallblock. What is the biggest tire I can put in? Can the leaf springs be moved or removed and a 4 link installed? Since it is just a coupe i will do any mods i need without cutting into the interior. I hope ya'll can help with this. I've been looking for a while now and haven't had much luck.

From what I was told by a few 4-link manufacturers, you have to lose your rear seat to do the job. You might be able to use ladder bars and leave the interior alone.

Either way, you don't have to do this is you are making 500hp. You should be fine with the stock suspension style.