Quote from Geoff on 21 August 2023, 15:38

Mike,

On my 411/3  we used a boot mounted Facet red top pump without a pressure regulator, on my 603 we used the same pump front mounted in the drivers side wing bay and on the late Martin Barns recommendation fitted a fuel pressure regulator because of the smaller size engine. However as your 411 has fuel injection it is worth checking the recommended fuel pumps for that system on the manufactures website, you may also find some info on the Summit Racing website.

Geoff. 

https://www.fuelpumpsonline.co.uk/facet-cylindrical-pumps-12v-1821-c.asp