Hey and welcome to the forum....
Cheapest is to run the FWD cooling gear.... and fwd alternator bracket / setup... get the mounts off Jordo (ke conversions) and bolt it in onto the ke crossmember. Peddle box wise he can also mod your ke one to suit.
Cut n shut the inlet manifold or buy one from either sc86 or justjdm, extractors best bang for buck are the universal ones kaizen garage sell as well.