What valve springs should I use?

Dang I was not aware it was that minor of a problem, machine shops and such had told me it was a no-go but if that's the case then hell yeah... I was worried I'd crack the factory Magnums on my 360 but if what you say is true I'd love to stop caring lol

CordobaDart what head gaskets you gonna use? I would use the thinnest (steel shim??) you can find with those dished pistons. I am also running the Hughes 1110 springs on my 360 with their retainers and locks, the engine has at least 20k since I put it together and it still runs great. I should probably pull the valve covers at some point though and check it out, I can't say exactly the condition of the parts but I run it hard and it never makes noises or skips a beat.
Good to hear you are getting good service out of your springs. My buddy has a 01 Ram 5.9 he put the Hughes air gap fi intake on and a towing regrind cam in, along with this same spring-retainer-lock kit and a tuner. His truck has far more power but he plans on headers and a modified throttle body next. Has treated him well even with towing a trailer of snowmobiles and a bed full of gear up north.

The head gaskets I am using are the standard fel-pro blues that came in my la kit for when I was originally going to just re-gasket this engine and cam it. They lined up good, hope everything seals up nice.