Richards,
I'm doing the same conversion. I plan on replacing the fixed suspension with shocks off of a HL Pershing. I know it won't be protypical as they are about twice the size but I think it will give it some nice working suspension. I also had planned on replacing the gun tibe with brass ( do you have any pics?) I plan on cutting the muzzle brake and recuperator off and drilling through them and using them on the brass barrle. Did you do the same ?

Jim