What goodies do I need to build a Fast slant 6

Do you ever wish sometimes you had a stout V-8? Or do you love the power and sound of one? Only reason I ask is aside from some of the rabid diehard hardcore Slant 6 guys out there that live and breathe and will do everything to help (and convince) you build a stout slant, you may be disappointed with the cost and outcome if it's your first Slant. It'll never satisfy like a V-8 I don't care what anyone says. Slants are cool, visually and can be impressive beasts but you WILL trade away street manners if lumpy lumpy and radical are part of the equation. Power boosters as mentioned would be your best bet, but $$$$$$$$$
Hi 12many
Yes I hear you 15k is a lot for a 6 that has basically no technology advancements just all old school, and yes I’d thought about a V8 but I have a V8 engineered into my Toyota 4Runner so just wanted to go with a six cylinder with a real lumpy cam setup I had hoped it wasn’t much stuffing around to put a 265 in it as they can make a heap of power pretty cheaply but I’ve had a few tell me that it’s also a bit of stuffing around!, and at 50yo I’m past the stuffing around stage in life been there and done the and the body’s just to broken and tired so was hoping now that the 225 was able to make some reasonable power gains but just didn’t realise How expensive they are to make power.
I’m open to suggestions still at this stage as it’s just sitting there and hence why I’m on here trying to figure out how to go about it.
Cheers