GM Crate numbers ? Can't work out what I have bought?

[ozkiwi]

I bought a crate motor with this part number and specs
GM12486041-1

CRATE MOTOR SBC VORTEC 330HP
H/ROLLER

Small Block Chev 350 c.i.d 330 Horsepower Crate Engine
330 Horsepower, 380 ft. lbs Torque (Hydraulic Cam, Cast Iron Vortec Heads)
* Hp: 330 @ 5000 Rpm
* Torqu e: 380 @ 3800 Rpm
* Late-s tyle Block With One-piece Rear Main Seal
* 4-bolt Main C aps
* Cast Iron Vortec Cyl inder Heads With Centre Bolt V alve Covers.
* Hydraulic "d ual Pattern" Camshaft
* 9.1 :1 Compression Ratio
camshaft
lift: .435" in / .460 exh
duration : .212" in / .222" exh

1.00

But when I put that number in google search I get 350HO come up which is a flat tappet cam motor?
Does the -1 at the end of the part number mean its a roller cam motor
or is this listing incorrect ?
http://www.outlawspeed.com.au/shop/i...c77e8970452d77