Thanks VW Xtreme with your fabricating skills you could do all the above your self
The most expensive at the moment will probably be the alternator fan at around R10k but if I shop around could get it probably a little cheaper
Most of the parts could be sourced or made localy except some
The imported spares are
Cam
Lifters
D/Valve springs+cromo retainers
bigger valves
CB Rods with ARP bolts
new 1835 sleeve kitt
Ratio rockers
Chromo pushrods
EMPI 009 electronic dizzy
External full flow oil pump and filter setup
Local spares
Block AS41
std crank or WBX stroker crank then fit counter balanced wieghts on and have it 8 doweld pins fitted
Heads fit bigger valves + seats
Porsche fan
RX 7 oil cooler
Twin carbs 2nd hand or build trottles with EFI Or even TURBO THE THING
Exhaust
Petrol
Impi is the man to talk to as well for motors I actualy prefer to do the transmisions all though as you can see do some ac motors this type of build you dont realy get revenue for the time you put in purely for the chalange and love
Just the fan housing alone you could put say 20 hrs in incl painting when I built buggies you charge the guys 50 Hrs so half the time it took just for the fan housing
But dont be shy to ask for advice
This build has made me actually hugry to start on my own flag buggy motor the 2.4 twinspark t4 TURBO