You are going to more HP & torque & flow by installing 1.85" valve & some lump ports.
W/a 194" intake you can get pretty thin in the valve seat area & possibly get into the water jackets,,,it's not worth the minimal gain you would get,,,,but I would install some 1.85" intake valves any day of the week w/lump ports over just a 1.94 valve w/no lumps.It will out perform a 194 valve w/no lumps.
Talk to Twisted6 I.I #3220 about what your options should be & what he recommends.
I used to pay 20 per hole for boring,IIRC,,magnaflux is cheap ,turning a crank 150 tops.
180 or so for cast 307 pistons P.A.W.
Intake valves $4.00 ea,exh,3-6 dollars each. PAW old price list.gaskets set 32-80 dollars.
Cylinder heads is where you could spend more money than a stock bottom end.
MBHD
Just my two cents.
