[glock35ipsc]

You can see the 1" blocks (maybe 1.5", can't remember) on my 68. I originally bought 3" springs and wanted more, so I put the blocks on it and it put it right where I liked it.

I've seen some really big blocks before (3-4"+), but wouldn't personally go that big. Going too big might put the u-bolts and/or shock mount below the bottom edge of the rim. If you have a flat or a blow-out, that could lead to some unexpected fun. But like I said, it's a personal thing.