i have built my efi turbo engine for my van with all new parts where pos. the only turbo i got is my spare for my cossie the unit fits the rs exhaust housing and elbow.would this work or to laggy/not work?

polished port matched to head inlet
uprated bearings bolts etc
uprated head bolts
ported head
standard cam (to be swaped for newman after me holiday)
ofab 195chip bieges

or should i stop being tight and buy proper one?
any info tips?
cheers mike