'68 C10 with 454 and headers

[Drummerboy]

I have a '68 C10 that has a 454 in it now. The guy who built it put a set of headers on it but had to dang near pinch the #1 exhaust tube down flat. It's not completely pinched close buy, it's close and that bothers me. Also, the hang super low and my truck sits low with a static drop. Not sure of the drop, I'm thinking 4/6 or 5/7. I need some ideas for headers hat fit or otherwise, I'm going to go either a stock set of exhaust manifolds.