Looking at a 99 mach 1. How do they run and if I decide to go with aftermarket pipes what would you recommend and how much hp would it be putting out?

my buddie has one its been a problem free sled for him so far.:) its got
16,000 kms on it now .he installed a new crank at 10,000.just too be on the safe side. and had a problem with the bottom rad hose leaking.for a while now there known for that too.but other wise its been a good sled.i take him on bottom end with my 800 but he keeps up on top end. :devil: :devil: :devil:

Any mods done to his sled?

no just boysen reeds.

Crank Shop pipes make 7-8hp