H22a7 cams (from a Type-S or ATR) are more aggressive and therefore more sort-after and come at a larger price. Also you'd need to fit the exhaust cam as well (no biggy if you're replacing the intake anyway), but you would need a tune after fitting those as well, so best to stick to H22a, H22a2, H22a4 & H22a5.
Can't remember if H22a8 cams are more aggressive. Sure someone else can say.
1 Set BRAND NEW in plastic (never used) circa £150
1 Set JDM H22A (used) (cannot verifiy mileage - sold to me as 40k miles) £40
1 Set UKDM H22A2 (used) 90k £40
Let me know if interested
Tim 2004 S2000 GT Berlina Black
SOLD 1992 JDM-BB1UKSPEC-B545P-H22A7-U2Q7-P72 NEPTUNE RTP
RIP 1995 UKDM-BB1-Pacific Blue Pearl http://www.s2000-parts.com Profile