One of my friend who has an 4.6 RPI Stage 3 intends to supercharge his engine.
At this time he has an Hotwire J.E Engineering Twin Plenum :
- fully rebuild twin plenum
- billet 45mm trumpet base
- fully ported and polished inlet manifold already tapped for NOS Kit
- silicone hoses
- ITG Maxogene air filter
- 20 AM AFM
- High flow injectors
- Tornado Mark Adams Eprom

How much he can hope to sell the complete kit ?
I sold my own TP ( stock and flapper) for 450GBP but no idea what's worth one time it is fully modified.

