Headers for a 1988 Ford 460 engine

Sanderson headers. Keep in mind good headers are not cheap.

A remark by Jose who may be at work and can get back with you later.

As I mentioned, a couple members here have recently considered headers and some got them. Give this question awhile to soak, and you may hear something helpful.

JD, I know the Banks and Thorley system are expensive alright LOL. We don't have to test for emissions here.

Don't run off. A couple of the guys here have gotten 460 headers recently. You're better off with headers that have long tubes, which promote low/midrange torque. That's what you need for a heavy load like a motorhome. The more popular, and less expensive, "shorty" headers are for HP at high rpm.
The Thorley Tri-Y headers, which come with a crossover pipe to a large single exhaust system, are the gold standard in Class C headers. Them and Bank$. Is your vehicle subject to emissions testing? It's possible that the emission system on the EFI engine calls for a different emissions complying system than the carbed engine does.

I had Banks headers on a '96 460.

Banks used to carry a couple kits for the FI 460. I remember looking at them when I had a '90 truck.