i'de rather underpower a type-R than overpower a type-S.^^^^x2^^^^^. but with that amp only putting out 500RMS (@14.4V), it may not do the type R justice. you may be better off with the type S unless you can get more power
That's what I'd do.i'de rather underpower a type-R than overpower a type-S.
plus, if he wants to, he can get a bigger amp down the road.