f15cr gearbox

[dazz4]

i have as above for sale, originally thought it was f13cr but was told otherwise by some gearbox specialists. not sure how much it is worth. hoping you guys can help me out.
im gunna say £50.
cheers

[dazz4]

just to let you know that the gearbox casing is an f10 with a 418 final drive but has f15cr gears in so it accelerates very quick and has a wide 5th gear for motorway. i still have the original housing and 374 final drive (which would put box back to standard) and can easily swap it over if wanted or would sell both together for you to decide. with the box as it is now my 1.3 does 0-60 in 8-9seconds and still sits happily at 80 on motorway, not sure of topspeed, had 130 out of it tho.
not sure how much its worth so ill take offers.