If you're looking to take the easy way out, the GMPP ZZ4 from Scoggin-Dickey, www.sdpc2000.com
, at $3400 is not a bad deal. 355hp and 405 lb-ft in a roller cammed engine for that price, when you pretty much only need to add a 4bbl carb and headers is a pretty good deal.
Don't know about the build quality (weight matched components, degree of balancing, quench height, main bore alignment, etc.), but cost-wise it's probably not THAT much more than I've got into my non-roller engine, which took about a month to get machined, assembled, etc., and which should (though have not gotten it on the dyno yet) put out just a bit more torque and power (maybe 375-400hp and 410-430 lb.-ft.) And if it falls apart, it's mostly my fault since I did the assembly - no warranty. On the other hand, if it continues to run just fine (about 5000 miles, sounds good, and no metal fragments yet), that's also to my credit. (And of course my machinist, who also helped advise me on the build, deserves a LITTLE of the credit too! - thanks, Dana!)
355 SBC powered '87 Chrysler Conquest TSi - 10.3:1, Vortec heads, XE 268H cam, HEI, eq. length shorties, Performer RPM intake, 750 Edelbrock (1407), T-5 and 3.54:1 posi indep. rear