GM has an L31-R long block that can be had in the states for under $2100.
http://www.summitracing.com/parts/nal-12530283/overview/make/chevrolet
When you look into it, you get a roller block and cam (which includes the spider and lifters, etc.) with 9.4:1 Vortec heads, an oil pan, front cover, timing set and it's a 4 bolt block. PM rods and hyper pistons too. $2000 less than a ZZ4. The only thing missing is the forged crank which is only a 1053 forging in the ZZ4. Down the road the heads could be updated and a cam with more duration would certainly help as long as the lift stayed below .450. Seems like a reasonable way to get a 4 bolt roller. Or am I out to lunch?
http://www.summitracing.com/parts/nal-12530283/overview/make/chevrolet
When you look into it, you get a roller block and cam (which includes the spider and lifters, etc.) with 9.4:1 Vortec heads, an oil pan, front cover, timing set and it's a 4 bolt block. PM rods and hyper pistons too. $2000 less than a ZZ4. The only thing missing is the forged crank which is only a 1053 forging in the ZZ4. Down the road the heads could be updated and a cam with more duration would certainly help as long as the lift stayed below .450. Seems like a reasonable way to get a 4 bolt roller. Or am I out to lunch?