Short answer...no. Long answer, yes.
It is possible to do what'* called a "Top Swap". But in your case, your kind of reverse TS.
You would need to swap not only the */C, but the heads, and intake manifold from the L67 to the L36. But, the problem lies in now you have a higher compression ratio'd engine, and you need the ability to reprogram it so your not destroying your engine.
With the current programming, it may be to aggressive. This should only be done if you have access to a scanner/programmer such has HPTuners. I highly suggest you stay away from mail order tunes. Because in order to tune engines correctly, constant scanning/logging is needed.
1997 Pontiac Bonneville SEi-SCRAPYARD
2000 Chevrolet Blazer LT 4X4 4.3L
2002 Chevrolet *-10 LS Ext Cab 4X4 5.7 V8