you should check into a shipping company as an alternative to UPS. I checked around and I think it would cost around $200 to have a short block shipped, so w/ heads would be more i'm sure. I know they aren't stock heads, but my Cast Iron GT-40P heads weigh 49 lbs each...I did weigh them.
stock e7te heads are like 48 lbs a piece....and the block is probably close to 100 lbs. thers a reason why engine stands have a 1000 lbs limit on them, haha
The naked short block is more like 150 lbs. + 50 lbs. each for cast iron heads (assembled), 27 lbs. each for aluminum heads. It's gonna be WAY over 150 lbs. - more like 250 + crating weight.