Thinking about race seats for the TR4 - I like the look of a vintage style seat and headrest on the cage... a kirkey vintage low back seat (41v) is basically a pro street drag seat (41 series) without the headrest (and $80 more expensive with cover). Not to mention actually being able to find used pro street seats... The cheapskate in me says find a couple of used drag seats and cut them down. Any reason this is a bad idea and will kill me?