i wouldnt do it with a 2.3 box as the ratios are horrid
unless you get the complete gearbox, machine the input shaft, play with clutch drive plate combinations, fit the 2.3 starter and wiring for the relocated starter motor, and clutch cable assembleys etc.
i would check the propshaft splines before you get the 2.3 aswell
it just isnt worth it in me eyes
if it just boils down to not wanting to spend £150 delivered
on the correct box then say so

(i messaged a few people on ebay and 2 were this price)