Hello to all. I am new to this site... but not to inline engines!

I am researching building a turbo/ supercharged chev 250 inline. I have been reading about the draw-though system and am wondering about turbo lag. It must take time for the fuel to get from the carb, through the turbo, through the intake and into the engine. But how much of a lag are we talking about. A few seconds after the throttle is pressed until the car moves? Sorry, this probably isn't classed as 'turbo lag' ( I know that turbo lag is the time it takes the turbo to spool and create boost, but what else would you call it?!)

I just want a fun driver with some scoot. I'd like to go back to a six, and I'd like a power adder. The draw through system seems to be the most simple.

Any help I can get would be awesome!

Adam