Yeah i havnt fitted mine yet. But heres what i know so far
The Autoexe/Maxim headers will mate up with the block just need to have a mid pipe a little longer to meetup with the header. I believe this is due to the FP sitting a little further forward in the engine bay? (IIRC chicaboo mentioned this loooong ago to me, i may be mistaken though!)
Its incredibly simple to just get an exhuast job to do a cut n weld though so dont let that deter you from a great set of headers!