http://www.csd.uwo.ca/~pettypi/elevon/gustin_military/db/
Use the Military Aircraft Database to compare stats. The A-27 and A-29 have similar performance but the A-29 has more range and is much better armed.
The SBD Dauntless seems a reasonably close comparison, since the A-29's range would probably be curtailed with full bombload etc. If the carrier-borne capability isn't a problem for you (note that you shouldn't be mixing aircraft types in a single unit in any case) then you could go with this.
Alternatively, use the BioEd. It'll only sting a little.