read the Rb30 pdf file and go through that huge 300 page f**k off thread
all the answers are in there
box, clutch will be fine
might be to late to change parts now if your already building the 25
why would you need a twin t51r on a rb26?
1 high 1 low might be possible with custom manifolds, dump pipes, intake pipes, and cold pipes.
the rb26 will never flow enough for a twin t51r unless its a dedicated dyno queen
Havent heard of those rods before
but its the revs that kill rods, theoretically it should be one of the last parts to go
piston, bearings would shit themselves first?
2860-5 are very similar to the 2530s
they make a touch less power compared to the 2530 and when pushed hard will make close to 500awhp
most people running these would be in the mid 400 range as pushin a turbo hard will shorten its life span
why not go a high mount big single external gate