A standard zetec on throttle bodies makes 170bhp

2lt engine £150/200
1800 escort sump and pick up £50 max
Throttle bodies kits for mtech £1395
Ashley manifold 200 new 70 second hand

Modded mount £30

Inner wing mods labour

5speed set up less than £200

So a new modern set up with 170bhp will cost around 2k due to needing injection tank lines and pump

To get that from a crossflow you would need well in excess of 5/7k