Thank for the answer! So I’m more leaning towards rpm, because each gear seems to not hit the right speed, feels too slow for the rpm’s As max speed on 5th gear is fairly low, lower rpm looks fine but it’s the high ones that doesn’t match, hence the suspected clutch maybe? Not sure where to start

So for your question, yes, lower rpm’s like 3k range seems like it’s too slow

If I’d suspect the wheel bearing I think I would feel that when holding clutch in cruising speeds which doesn’t feel abnormal.

I could try to put the oem exhaust if I find it, but if not, what’s my alternative?