What are you looking to do, if you what stock OE type appearance know that there won't be an part numbers pentastar logos or any of the things guys who judge OE look for... For that you either record a original or you contact Glen-Ray Radiators...
If your just looking to cool a stock/mild engine & you live somewhere that doesn't get very warm the radiator you chose might be ok.... But realize it's a 22" core for a big block & if thats truly your application then the cooling system is marginal so if you live somewhere where temperatures get above 85 degrees you should look at a better radiator...
My suggestion, look at US Radiators site, they offer many options for their cores, 2,3 & 4 rows, wide spaced tubes similar to the one Classic sells but made in the USA instead of China...
A Cut & Paste Standard Core
Based on 60's style core with 1/2" tubes on 9/16" centers; the standard automotive core units are drop-in, stock replacements. Made from all new material they offer the highest quality for your stock application.
High Efficiency Core
Copper 80's style core with 1/2" tubes on 3/8" centers. Increased cooling efficiency without modifications to car. 4 row High Efficiency offers more cooling efficiency than aluminum cores due to tubes on 3/8" centers. Copper/brass construction to ensure dependability.
Optima Core
Extreme style copper core with 1/2" tubes on 5/16" centers. Offers 40% more heat transfer points. The most efficient core on the market when combined with increased air-flow and our Tripleflow option (note: Tripleflow option requires that inlet and outlet be on opposite sides and must use auxillary tranny cooler for AT vehicles).
I would also suggest temporarily adding a filter to your upper radiator hose, if you have a fresh engine you'll think the cooling system is clean but since the EPA took away all the good chemicals for hot tanks years ago cooling system don't get as clean as they once did... So the hot tank loosens but does not remove crusty deposits in the coolant passages, you fire up your new engine & after a few heat cycles with things expanding & contracting & some coolant flow, now those deposits break free & guess where they go? Straight to your radiator & mid way through your first year on the road your engine starts running hotter, by the following year it's borderline overheating & your sacred to drive the car...... Solution a filter in the upper hose that catches the debris... The first couple months you'll need to clean the filter a few times, then it usually slows to every 2-3 months & by the second year you can usually pull the filter & toss it in your tool box for the next project...
http://www.ganofilters.comhttp://www.usradiator.com/dodge-challenger-1970-72-v8-bb-radiator.html