Steve,
You certainly won't be able to have the ALS on the GT35 like you have on the Mar-M shafted T4 you currently have. If you want more power, why not upgrade your T4 that you have with the larger compressor (this is what I did and tested the turbos back to back ), which will shift 4lb of air more than the one you have at the moment. Good for 550+bhp with a correctly specced engine .