I have a 1970 Aquacraft flat bottom v-drive boat that I have been working on for about three years now.  It is a 100% complete restoration project.  Everything is new! 350 sbc, Powerglide 2 speed trans with reverse, Casale V Drive (rebuilt, new gears and bearings), tandem axle trailer.  New everything, bolts, paint, motor, trans, seats, standard gauges, air/fuel gauge, wiring, pumps, battery, hoses, belts, brackets, bearings, tires, water cooled headers, cover, steering wheel, bushings, EVERYTHING!!!  It should be around 300hp, has 25%OD gears in the vdrive, currently running a 11x17 prop.  It is running 65mph at 4800 rpm, so I am having a new prop built to get the RPM up closer to 6000, the speed should increase to 70+ mph too.  The Motor has flat top pistons, roller rockers, and a Comp Cam.  The Powerglide has dragster short gears, manual valve body, and a new torque converter.  I have pictures of this hull sitting on the ground with weeds growing out of it, and all the way through the restoration.  The spreadsheet I have shows over $13000 in parts, that does not include my labor, so you can believe me that it is in GREAT shape!  There are still a couple finishing touches to be done, but it is lake ready.  The hour meter is reading 1 hr.  That is how much lake time it has on it.  I have broken in the motor and especially the Cam by Comp Cams recommendations, the Hour meter was connected after that.   The trailer is rebuilt as well, new bunks, bearings, springs, coupler, paint, and tires.  It tows very easy, and has just the right amount of tongue weight.  The cover on the boat is not a towable cover, but is perfect to keep the boat clean. 
   I should have the new prop in a week or two, but I can take it to the lake now to show how it runs, or run it on the trailer with an adapter I made so it will run on a garden hose.  I have video of it running as well.  Ask any questions, I'm happy to answer them.