Quaife dog box H pattern , 5 speed RWD Dog engagement gearbox for high output engines .This gearbox is rated up to 450bhp although they will cope with more , Cosworth YB or V8 applications etc.. input shaft size is 1 1/16th x 26 spline , i have clutches available (pictured ) . 2 identical re-built boxes available, price is for each ! Various ratios are available. Base set: 1st: 2.200 2nd: 1.671 3rd: 1.238 4th: 1.089 5th: 1:1
Price: £2,650+ vat

http://www.touringcarspares.com/part_list.php?cat=trans

YB Bell housings are also available from Quaife for this box , i have seen std Coworth ones chopped up and fitted without problems tho .
This is not a Roadcar box , its purely a competition item and is being sold as such .