Just wondering if anyone knows a good place to get oil coolers.

There are heaps of very affordable coolers on ebay however I am finding that despite there being every conceivable configuration in terms of how many rows the oil coolers have, they all seem to be the same core length. They all tend to be about 33cm long including end tanks and mounts. I am having trouble finding cores that are shorter. Unfortunately I need something around 15x20 in total, and thickness up to 7cm. No-one seems to sell coolers in those sizes except for Capa and they are expensive.

I just have no room left in the grill area and I really don't want to mount below the front apron or any hideous out-in-front mounting.