Ironhead/ Evo sportster question (frame)?

Question

Is there any difference between the frames for an ironhead motor as opposed to an Evo motor?
Specifically the mounts?

I want to weld in a hardtail section on my E84 ironhead sporty. But what I am coming up with is a hardtail section for an Evo sporty.

By looking at the section for the Evo, I see no difference. Can anyone verify this at all?

THANK YOU!!

Answer 1

there should be no difference from '83 to about '89 or '90. they raised the backbone neck to fit the larger evo heads in the frame, starting in '86. the e84 you have should be the same as any up to the '89 model year. this may not apply to any "hugger" 883s out there.