Exhaust for 16V Conversion

For the 16v Conversion I know that I need to get a new manifold but will my Mongoose Stainless system connect upto the manifold and run ok?

Or will I need a new full system?

Any help appreciated

You dont need a new exhaust, no.

But you may need a short bit to go between the two, depends what diam exhaust and maniold you go for.  The Ashley manifold (and I assume the Storm as well) exit at 2.25" diam.  Really you just need to get it on and see.