Agree VF34 is best of VF range single scroll and will max out at approx 360BHP/335ftlb with good supporting modifications.
Make sure the exhaust housing is not cracked on the inside from the wastegate flap outwards. Alot of the VF's are showing single or multiple cracks in this area now.
The other option (but rare) is an MD304 which is a ported VF34.
Spooky had one for sale on here, i bought it but it had a cracked housing, so after we both searched for a while we concluded we could not get another housing or at least one that wasn't already cracked (it uses a VF24/VF28/VF29/VF34 exhaust housing), so he took it back.
He may still have it if you can locate a housing :
http://www.southeastscoobies.co.uk/v...ighlight=md304