GM and Chevy in particular have the most ubiquitous and affordable aftermarket parts, Ford second (and Mustang bits in particular are well supported.) Mopar are a DISTANT third, particularly in Europe.
Be prepared to spend a packet on bits at the moment with the strong $ and ludicrous shipping charges that the US factors stick on everything to the UK.
Do not go down the rabbit hole of tuning and modifying anything too far from stock. As stock, US cars of the 60s are reliable with regular, very basic maintenance. For the early sixties cars, if you want to upgrade anything (ignition and brakes are the usual) do some research and find genuine parts from a later year model that fit. All the US manufacturers only modified their platforms sporadically and lots of news stuff like disc brakes and electronic ignition can be retrofitted. OEM stuff is reliable and very cheap compared to the aftermarket performance stuff.
I think the 'Stangs only really start to look nice after 67 - before that they look a bit anemic. If a Fastback is out of the budget, the 69/70 Coupes look the prettiest to me. Try and avoid anything with a FE series engine squeezed in there, they weigh a ton and fuck up the already diabolical handling. A high winding 302 would be my donk of choice. High revving Ford V8s from the 289 on up always sound fantastic.
GM and Chevy in particular have the most ubiquitous and affordable aftermarket parts, Ford second (and Mustang bits in particular are well supported.) Mopar are a DISTANT third, particularly in Europe.
Be prepared to spend a packet on bits at the moment with the strong $ and ludicrous shipping charges that the US factors stick on everything to the UK.
Do not go down the rabbit hole of tuning and modifying anything too far from stock. As stock, US cars of the 60s are reliable with regular, very basic maintenance. For the early sixties cars, if you want to upgrade anything (ignition and brakes are the usual) do some research and find genuine parts from a later year model that fit. All the US manufacturers only modified their platforms sporadically and lots of news stuff like disc brakes and electronic ignition can be retrofitted. OEM stuff is reliable and very cheap compared to the aftermarket performance stuff.
I think the 'Stangs only really start to look nice after 67 - before that they look a bit anemic. If a Fastback is out of the budget, the 69/70 Coupes look the prettiest to me. Try and avoid anything with a FE series engine squeezed in there, they weigh a ton and fuck up the already diabolical handling. A high winding 302 would be my donk of choice. High revving Ford V8s from the 289 on up always sound fantastic.