what tune do I have ?

I have a nos plate set-up for my 420sbf 4150 plate, fuel jet is .071 and NOS jet .063. I bought this kit off from a car that a buddy of mine had and the kit was all new but never sprayed it and I got a good buy on it. Think its a cheater kit. Where do I get a chart for different tunes to use? Thanks

looks like the old nos tunes....... fat as hell.

flipping the jets would be a good place to start......... you'll have to do so digging but the new charts are someplace............ or send it to steve ad get it flowed and blueprinte......
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That's super fat. Looks like if you flipped them it would be around 150, maybe a tick more.

Just an FYI, depending on the parts in the kit as well as their condition we find it very common to need to make the nitrous jets 10-30 numbers larger then fuel to correct the nitrous to fuel ratio in those systems when flow testing them... I'm not saying to go do this to a system we have NOT looked at, just sharing things we see.. Thanks, SJ