Can't afford my full upgrade path to my power goal (425-450) which will require MPI and a LPFP. But maybe a Vortex XL and for now stay within the fuel limits of the stock fuel system. That would be what 400ish whp?
I'd also advise against that.
And like @MSH said, I don't think they'll tune it without at least the HPFP. And then when you're doing that process, you'll be told your LPFP isn't good enough. And you'll see the stock PUT being maxed out.
Just do it all at once, right