I have used this radiator for the last few years with my BOE REVX setup. It performed very well even with the added heat from a REVX. I spend a lot more time in Texas these days so I decided to change to an Uber F1 radiator.
The best description is on the BOE website.
www.boefab.com
$350 shipped.
The best description is on the BOE website.

High Performance Pro Alloy Radiator – BOE Fabrication
Pro Alloy is a well known name in the Lotus community. This 45mm thick, twin row core, all aluminium radiator is a direct fit replacement to the stock part. It has greater cooling capacity than stock and will with stand a lot of abuse. In addition, for those running high pressure cooling...

$350 shipped.