I am converting my car to a zetec with dhla 40s and wondering if i will need some sort of fuel pressure regulator, or do i just fit a electric fuel pump with no regulator?

I think it's usual to fit a filter king regulator with DHLA's

or fit a low presure pump such as a bike pump or the huco pump sold by webcon for weber's.

high flow low presure. just stick huco pump into ebay. The pump isnt cheap but its cheaper than a pump and regulator.

I fitted a pressure regulator to mine running twin 40's, I did run it without one for 2 years but it overfueled when sat in slow moving traffic