totally awesome build...should be a beast,i like that motor and them pipes[8D]. i look forward to the vids of it running. can't see cooling being an issue when you're ice racing
i assume they are carson diffs,shocks etc that you used...carson are in fact made by smartech and are built to the old titan/hurricane C5 spec models that had a few upgrades from the regular titan...both used splined diff cups and fg style cases, so stronger than the nutech spring loaded set up(the C5 came with the alloy diff cage set up and were sealed i believe unlike the stock titan)...with the outer cnc cases they should stop these models achilles heel of diff box flex/ring &pinion stripping, only possible problem i see would be snapping dog bone pins or twisting them.