I am also installing a Alloy Rad, However, I sourced one from China via EBAY. So far it looks like it will fit OK. Looks well made. (But what do I know about alloy rads?) Have no fear; if I lived in the UK I would have sourced this from MULFAB or Simon. Not sure I saved any money. If so not much. It was interesting to inspect My Old Rad. It was really fouled by bugs and dirt. I also tried to "Flow Test" it but really not knowing how to do this I just poured a quart of water in the top and timed an measured the water coming out the bottom. It came out very slow, and at least a pint is still in there or at least until I poured it out the top it was still there. I may have it re-cored and keep it as a spare. I had used this old rad for about 50,000 miles and wondered why My +8 Bitsa overheated when pulling a long hill at speed. Now I know. This job is another reason to not build a +8 Bitsa out of old parts. Nothing is standard. Of course nothing is standard about a Factory assembled +8 either. But better than my backyard effort.