I have a trick national LRD jug that was done by Art himself back in the early 90s, but its lived a long life and on the last rebuild i noticed that what is left of the intake bridges are cracked through including the sleeve. was thinking maybe a bigger 310 sleeve and just leave out the aluminum bridge pieces... but that may cause issues with uneven heating cooling with the intake area not have aluminum to help cool it. so would a 86 style 310 work. or is it time to play taps for this fine piece of TRX history and hp? any ideas what i should do for a resleeve would be appreciated...