Randy,
I had Ly-Con buildup a coversion kit to go from carb to injection for my
O-340 engine. As I recall the complete kit, including boost pump, cost
about $2,600 including a recalibration of the injector for the 340 engine.
I didn't have any problem installing the kit and it ran fine at the first
start. Ken at Ly-Con does a number of conversions for 320's and 360's since
a number of RV guys buy a new "O" engine for $5k less than the "IO" and get
Ly_Con to balance, flow and convert the engine for a lower price than the
initial "IO" engine.

Rusty