2 Questions about a SL2

My friend owns a 94 sl2 w/ a 93 sl2 engine swap. It is fast, but he was wondering the specs to set hes spoiler to , to get the max performance out of it ...height, angles, that stuff.

And i dont remember the other one but ill post it on here at a later time.

Never mind, engines on 2 . Not that you know what that means.