Mopar Action 408 Build

So for the last 2 issues, MA is featuring a 408 build based on a cheap Ebay-sourced '90 fact. roller short block, Trick Flow heads, and a mild custom roller Bullet cam-.516 lift and avg. 240 @ .050. What I found interesting is their use of stock stamped steel rockers w/ custom length pushrods to set the preload. The rest is stock hydro. roller lifters/dogbones and the stock "spider" retainer. I'm in the 408 planning stages and their intended usage is similar to mine (4-speed, 3.23, similar weight car), and I could see myself building something like this although with better parts in the short block and more comp. as their combo. is at 9.66. I have no experience with any roller stuff and would like some opinions on the durability and suitability of the fact. parts for a street performance application. Would the stamped rockers negate the need for any possible geometry correction? The article implies that the LA roller and Magnum lifters, retainers, etc. are the same. True? Thoughts on this build vs. an older block w/ SFT cam?