The iron blocks are pushing 5k these days. If you build it with good parts like I did, you’ll have 25-30K in it pretty easy. If you’re gonna do a boosted EFI deal, expect to spend 45-50k not including the base car. I wouldn’t go that large in cubes unless you’re gonna put some large twins or a huge single on it. You’re existing combo isn’t even close to sorted out. That thing should run low 5s pretty easily. I wouldn’t give up on it yet.