Preformance Headers for a older xj

[Gearheadette]

Can a 91 header fit on an 88 4.0L

If not then is there other headers besides pacesetters for it?

Thanks

[gradon]

Are pacesetters really that bad? Do they last? I've read of the occasional fanagling the joining of the downpipe. I believe your 88 has an egr--the 91 does not. You could probably use a newer header(seems most go with apn/knockoffs these days) and block it off. . .

[maybe2fast]

pacesetter longtubes on my 95 TA fit great, the Ceramic coating however is not the greatest...

[Johnnie Walker]

If emissions are not an issue, then you could get away with runnign the newer header how it comes. IF you need your functioning EGR, then you would need to cut and weld a piece for the egr.

[cruiser54]

I think the oxygen sensor is in the exhaust pipe on the later models whre it is in the exhaust manifold in the earlier models.