First of all, it's a 2l bottom end from a mk3 golf, the head is from a mk1 golf gti.
First problem is the bloody K&N Filter I bought, It won't fit, few pictures below to show what's going on.




Is there anyway to get past this, or am I looking at buying another smaller filter?
Next problem is I got a mk3 golf gti rocker cover, all nicely polished etc, but it's stopping the 'thing' that the fuel lines go into from sitting snug and it won't bolt down properly, any ideas what to do, picture below.

...Next Problem, on the 2l block there appears to be another coolant sized pipe on the front, what do I do with this, what plumbs into it, from where to where? Photo Below.

It's the lower of the two.
Last but not least, this block has an oil cooler on it, which my previous one did not have, I've got a pipe for what appears to be the inlet, but where does the outlet pipe go to?

Not a very good picture, but hopefully you will get the idea.
Thanks for having a look.
