340 or 360 for 66 Barracuda?

Thanks all, for your replies. Didn't mean to leave the thread hanging with all the input and no response... Busy with the day job, night job (15 y.o. daughter - lot's of overtime!) and had a work related trip to Central America...
But - I did manage to find a 360 Magnum local for a fair price. I went through and re-read the posts here and now have a bit to consider - the motor is a completer runner, with almost all ancillaries included. This means if I want to I can retain the fuel injection. I also ordered a couple of the "How to..." books - Larry Shepard's How to Hot Rod SB Mopar Motors and Jim Szilagyi's How to Build Big Inch Mopar SB, the latter of which is very informative. In particular I found his recipes on 6 different engine packages interesting. Anyone here have any experience with his 'recipes'? I am specifically interested in the Magnum Muscle Car 408 build, as the motor I'm buying is the basic core for what is laid out. For those who haven't seen the breakdown, here it is -

4.030 bore / 4.000 stroke
block - Magnum 5.9l
Crank - Forged Mopar #P5007254 - internally balanced
Damper - stock 318 w/ neutral balance
Rods - Eagle SIR
Pistons/Rings - Diamond #51405, Speed pro moly
Oil pan and pump - Moroso deep sump # 20730, p/u #24700, Mopar #P4286589
Cam - Hyd roller cam - Mopar #P4876348 230/234 dur. @ .050, .0501/.513 lift, 108 deg. centerline
Tappets - Hyd. roller - included w/ cam
Pushrods - Stock Magnum
Rocker Arms - Stock Magnum
Cylinder Heads - Mopar Magnum R/T - Big Valve #P5007141 w/ porting done
Intake - Mopar M1 Single PLane #P5007380
Carb - Holley 750 cfm
Ignition - Mopar #P3690426
Ign. timing - 35 deg.


The claim is that it will make 505HP @ 5900 and 525 ft-lb @ 3800. Seems impressive... Realistic??

I'm going to price out parts to stroke it. I already have a pretty good idea of the bill at the machine shop. Then there's the whole transmission component to determine...

Another day.