What turbo should i get for my Escort Turbo with the following engine spec...

1600CVH
0.5mm oversise pistons with 1mm machined off to lower compression
Lightned and balanced bottom end - flywheel, crank, pistons and rods
Ported and polished cylinder head
Piper T2 camshaft and vernier
Pace charge cooler (mite be being changed for a GRS cooler)
Scorpion exhaust
Bayoo chip

Do i go for a cossie 4x4 item, an off the shelf hybrid or speak to a turbo manufactur and see what they recomend.

Any advice/contacts much appreciated.

Cheers