502 MAG MPI's to 525's
 

OK - We've found a deal on a pair of 525's to replace the 502 MAG's in the 45 Excalibur.

A couple of questions have come up and I need some input.....

What is the torque difference between the 2?

We're running Stainless Marine exhaust - the exhaust collects into a common pipe which then runs through a built in muffler in the hull. What are the odds of the 525 header hooking up to the existing common pipe?

Any other input would be greatly appreciated.

Capt Ross