Welcome. Sorry your fun day went south. I have been doing the Test-Tune days with my Rocket for the last 5 years. It is quite a lot of fun for sure. Even to the point where I am building my Rocket with cams, valve pistons, springs, base tune, et al from Neville Lush Racing along with up-graded clutch and springs, cylinder head porting, Viking 1.75 inch Dual Exhaust made by Paul Bryant, and RamAir intake. Neville and Paul are both on this forum and you can do no better than their products. With their products I am expecting to get something just over 200 HP and 180 TQ out of it. The work has been slow as my job robs me of most of me time. But pays quite well as it was a gift from God.
Post up what you need for your repairs/rebuild. Many of us have lots of extra part stashed away and we might just have what you need.
Of course expect a ton of free advice.