I currently have one of these (first pic) but the block adapter was too close to the turbo exhaust housing. So I machined it down which meant the male fittings had to be welded on. It worked ok but still wasn't really enough clearance.
Current adapter:
I'm putting it all back in again now after a rebuild but have noticed the fitting surface is damaged so is going to leak.
Now I'm looking at options for a spin on adapter that is 'low profile', possibly with the inlet/outlets on the side instead of the top. But I'm finding it doesn't seem to be very common.
I did find this on ebay but I'm wondering if there is anything local?
Like this: