Our waterway just lost two good mechanics for Volvo Penta. I am replacing a 2002 chap 23 ssi BR I had which was powered by a VP 5.7. Im going to buy the same Chap 23 model I had but have mostly a choice between the smaller VP 5.0 and the Mer 5.0-- or a huge merc or a 7.4 VP. For the smaller...