Mid-lenght header help!!

[88 5.0 hi perf]

hey guys, i bought some mid length tri y headers off my friend brand new. the only problem is that noone makes midpipes that bolt up to to the mid lengths. i called summit and they suggested getting the x pipe for the long tubes and just welding some extra pipe to the header. but can anyone help me out on finding a website that i can order that kind of midpipe from so i can just bolt it on rather than have to custom fit the pipes? thanks