Yes they will go in with the frame rails in. We usally put the in to the back of the cross member from dse. Here is some pics that might help http://www.smittyscustomauto.com/subpage16.html
Smitty,
Great pictures! One more question. My car is a 68, but I am relocating my shocks like the 67. Should I just order the 67 trunk pan? Is there any difference b/t the 67 and 68 structurally? I know the shock towers are different, and there is some sort of hump that the crossmember cuts throuh, but what else?
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Chris
1968 Camaro: DSE tubs and sub frame connectors, Chassisworks G-Link rear suspension, Speedtech upper and lower control arms, Chicane front coilover conversion with QA1's, Baer brakes, 18" Forgeline SO3's, Vintage Air, 6.0L LS 417 rwhp, 4L65E, Moser 12 Bolt w/3.73's.... http://www.cardomain.com/ride/2391864
Are you going to install the upper shock mount from the DSE kit? If so then it doesn't matter as you cut out that portion anyway. If not and you're going to use the stock upper mounts then from what I recall the trunk pan (at least the one I bought from Classic) doesn't go that far forward to include the shock mounts.