Stage 2 T3 is the absolute best turbo for you spec, if you contact turbotechnics they will say the same, if you were running zetec or 1900cvh a stage 3 + would be suited for that.

My mate tried a T34 hybrid on a standard Erst and it was useless.

Neil@fastford had a write-up about turbo's in his section of the mag and stage 2 was recommended.