Don't want to pee on the testarossa fireworks but $2320 seems like an awful lot of money for that cylinder head work. Even at today's very favourable exchange rates that's about £1260.
You could have similar work done by Mez Porting in Newport Pagnell, mere yards from the DSC's spiritual headquarters and AGM venue in Chicheley. They use a proper flow bench for their porting work (so it's not just guesswork) and you can get the heads gas flowed for a mere £260 the pair !!! If you want to go the whole hog, and get big valves to a size of your choice, then along with new guides it comes to a whopping £480 for the headwork plus £130 for the new valves. So that's £630 all told then (which is, spookily, half the price of the US job). I can't imagine that it would only be half as good, since I originally got the link from Skidlids (I think) who rated them highly.
Link is
Here Hmmmm....just had a thought. They seem to do a lot of porting work for Aston Martin's, and Aston Martin are based in Newport Pagnell as well...An ex Aston engineer from the days when they used to have top craftsmen building their engines maybe?
[Edited on 12-11-2004 by Jools]