Hm, say have you browsed through minitokyos naruto scans? I have an exam tomorrow, so I can't look for the pic there now by myself:
Click on "browse gallery", then you can filter in the left menu bar for group scans, male scans, couple scan, female scans, misc scans and monocrome scans. They have a large amount of original scans and often in very high quality (e.g. just downloaded a scan in 1500x2100px).
Only prob, you have to register and as a leecher you only have a small amoung of scans you can download each day (guess, it was 4 or 6 as a beginner). But for HQ scans so far the best source I know.