Just had a quote from radiator/intercooler specialist... Intercooler seems to be too far gone... it's leaking air... It could be fixed but I was looking at a price of about £70 to clean and repair. Bought a second hand on ebay in uk for £25 of a carbreaker
They promise it will be checked for good function before shipping and is guaranteed... It looks good, hope it functions as good as it looks...
https://www.benl.ebay.be/itm/253126033652?ul_noapp=true