first off if you want a high hp no power adders , you started with the wrong set up
b16 ,turbo pistons not good
If I was you I would use the ls block you took out of the car (refresh the botton end first ) arp rod bolts ,nice high compression pistons,new bearings and of course piston rings ,transfer the b16 water and oil pump to your ls if you think they are in good condition and slap the b16 head on it . sell the b16 block (cp pistons,eagle rods etc)
buy a nice set of cams (type r or skunk 2) and call it the day
sell t