we just fixed the ITS 2.5RS impreza SOHC/DOHC issues - mid model change, now 2 spec lines. check the most recent GCR.
4AGE small port (90+) is in ITA and ITB (geo prism GSi). I think the ITA CR is the problem, I think the ITB numbers are right (though it's likely the ITB car will be moving up). I'll look at it but a letter is helpful.
4AGE big port B engine (84-89) should be correct, B is getting gone through now so I expect this will be identified (the AE86 and AE89 both need weight changes to match that recieved by the MR2). Please write a letter if you have time to flag it for us.
Suzuki GA is Swift GT/GTi? not familliar personally - please write a letter and submit any tech info you can. agian, B is getting gone through and this sort of thing is very helpful.