I recently stumbled upon this bracket kit from hik fabrication, made me much more interested in doing an m20 swap down the line. I have never heard of this company or anyone using this kit, so I can not vouch for them. Just by looking at the pictures and some of their e30 products available, it appears like they make quality products with a lot of R&D, but theres only so much you can tell from a photo. I would recommend trying to find some customer reviews before purchasing, as with anything obviously. Link to the product below
http://hikfabrication.com/arvixe/E21_products.html
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