Hello....I am looking for some advice on a twin turbo. I am considering the BD R700 with the S300, S400 combination. I have looked at the ATS and Piers. Any thoughts on these or other twin combinations in a comparable power range for a 12 valve cummins.

The truck is an F450 with 4:30 gears and a US gear overdive (making the overdrive ratio 3:50.....this is with 19.5 wheels. The truck weighs 13,500 lbs with a 10' high checkerplate aluminum camper on the back. I drive mostly in the mountains and often tow a 12,500 lb trailer on steep grades in the Rockies.

Any information you might have on this conversion would be appreciated. I am looking at the adaptor plate and motor mounts from Destroked.

Thanks!

 

s300-s400 setup are good. so are the ever reliable and cheap hx40 ht3b combos.
its all what your looking for. i have a super 40 over a 3b

 

My 472 would make a great primary in a set of towing twins