Theres no substituting quality parts.Well you have a great starting point.
Theres thousands of variables as to why it’s hard to price and also customers go x garage will do it for 12k and then they look for better pricing even though they probably are’nt using the same parts.
Litchfield efr log manifold kit will be over £10k whereas there original housing one are half that money ( not to the penny)
Rods another example, manleys from the states will be cheaper than Arrows from uk But probably not quite as good If you get to pushing them to the extreme limits.
Interesting prices , I think I need a gearbox, after over boosting for a bit I now have reduced torque and feel its just a little bit slowI messaged Litchfields earlier, they answered some questions and not others, the enquiry was for myself but relevant to the abov.
upgraded gear set and clutch fitted £8k plus,so £9600. Thought that was ok.
A forged 4.6 stroker motor £25k plus vat and original motor serviceable and healthy.
A 4.4 Billet motor £30k plus vat.
Complete log manifold kit
102mm tripple silenced v-band system and downpipes to suit
I know some are clearly displayed on there site.