You shouldn't need the springs or pushrods with 6k shift points. We have stock springs in the SSEi with 1.9 rockers and it has 160k on it, its had the rockers since 70k, and it shifts at 6k with no problems, we also have stock springs in the Monte with no problems as well and it has stock 5800rpm shiftpoints. But every once in a while someone has a problem breaking a valve spring, its not something I would worry about though because its probably something that would've happend with stock rockers anyways. But I would just get the rockers and gaskets. Some people get new rocker bolts because they are supposed to be TTY, however I've reused them plenty of times and as long as you tighten them down to the torque spec and make sure you clean all the oil out of the bolt holes before screwing the bolts in you should have no problems reusing your original bolts.
1990 Maroon Grand Prix STE McLaren 3.1 Intercooled Turbo, 14.695 @ 94.49 on 12psi before cam/heads/etc.
1990 Bright Red Grand Prix McLaren 3.1 Intercooled Turbo, 14.819 @ 92.72, 189whp
1999 Grand Prix GT 9.75:1|K&N|160 tstat|No Ubend/Cat/Res|UD Pulleys|Ported M90/TB/Heads|XPZ|2.55"|Pacesetters|Stage 2 I/C. 12.442 @ 112.78
2000 Blue Bonneville SSEi Supercharged Gutted Airbox|K&N|3.4"|1.9'*|WP Pulley|Custom DHP|180*stat|41932'*|No Cat. 14.681 @ 94.80
2002 Dark Cherry Grand Prix GTP Supercharged & Intercooled
12.084 @ 114.38 w/1.743 60', 315.6whp, Fastest Stock Cam M90 GTP!
NOW XP CAMMED, 340.6whp with XP, stock heads, Gen 3 M90, 11.984 @ 115.84 w/1.750 60'!
Most HP Stock Heads Gen 3 M90 GTP!
2004 Red Monte SS Supercharged K&N|3.4 Pulley|1.9'*|180*stat|41919 plugs|3" dp|No cat/ubend|DHP|Shift Kit. 14.2 @ 98
GOT BOOST??? Friends dont let friends drive stock!