It can be done but with second hand parts just make sure they're all in good nic

3.7 diff ($100-$300 off ebay)
977b cam, j3 chip, vernier gear $200-$300
exhaust, pacemakers, cat $300
cold air intake $100
t5 conversion $150-$350
walbro fuel pump, au injectors etc under $200

Should be a beast!