Turbo compressor housing and FM intercooler

After a sucsessful dyno run I need a few more bits to bring the turbo spool time down .

First my intercooler is huge ! and I need something more feasible plus all pipe work is 3" thick . So I'm looking out for 2.5" pipe work and a thinner intercooler that's not to big .

Second I need to swap out my 4" anti surge turbo housing on my gt3076r . I'm looking for a stock 3" inlet.

Any help would great.

Thanks