I found it easier to make them.Cut the heads off them, find a similiar diam bolt with a shaft length of at least 35mm cut the head off it (at 35mm ) and weld this section to your original bolt shaft. One weld per bolt.
Nissan sell the bolts at original length if you stuff it up, or buy a set to modify so your car is not off the road while you do it.
Use high tensile grade 8 bolts
My welding is better than my lathe work.I used a full pen double vee butt with tig.(Coded welder and boilermaker by trade)
Try this kit, all the bolts are the right length and its 50mm kit
http://www.superiorengineering.com.au/product_info.php?cPath=31_51_341&products_id=1256
Try this kit, all the bolts are the right length and its 50mm kit
http://www.superiorengineering.com.au/product_info.php?cPath=31_51_341&products_id=1256
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