Want a stiffer 914? This 3-piece kit was developed to do just that. It strengthens the longs and ties the two sides together to ‘box’ the frame. It has the option of removing the front air tubes or remove the knock outs and leave them as they are. If you are building a autocross killer, putting in that bigger engine, or want to tame your flexy flier, this kit is for you. It does require you to have it welded, but after it is installed, you cannot tell from looking that it is there. Your stock carpet and firewall parts go back in over this kit totally obscuring it from view.