Yes it can, The HRC kits work well on the 420a engines, and they are pretty receptive to boost. By getting an intercooler you will safely be able to run higher boost levels on stock engine. But the intercooler s not a must, the kits still works well, but boosts only to 5 psi. Before you add a turbo to it though, you should make sure that the engine is in good condition. Getting a tune up and checking the engine compression should be done. Hope this helps.

Dave