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Will a header for a 22r fit a 20r? I’m not worried about it bolting up to the rest of the exhaust since I’m rebuilding all of it, I’m just worried about it bolting to the block
I'm not positive, but it appears that as long as you've done a de-smog on your engine and the header is one of the "race only" or "not street legal" style it should bolt up. EGR style changed so the emission legal headers are more year specific.
Based on this you should be able to make it work: https://www.lceperformance.com/Pro-R...-p/1041024.htm
Do a search on Ebay for:
Toyota Celica Pickup Hilux 75-80 2.2L Stainless Race Manifold Header & Downpipe
Not a bad set of pipes for a buck and a quarter, and it's for the 20r.
This header will also fit the 22r with the older hemi head with the round exhaust ports. It will not fit the newer 22r heads that have oval exhaust ports.
If your install requires block off plates, You can get them from LCE Engineering
I hope this helps but the first picture is a 22r and I have 3 header bolts on the bottom. The second picture is a 20r and has 1 header bolt on the bottom. on LCE Perforcmance they have this gasket for 20r https://www.lceperformance.com/Pro-H...-p/1040006.htm