Difficult to get ahold of somebody. Ive heard difficult to get response with guarantee repairs. I believe they set out a fantastic product or service while. Just have to communicate & obtain a new engine. Vendor responded quickly and refunded $50 for the bolts. Professional tip: Double-Test the packing checklist https://elevemotors.com/product/toyota-supra-aristo-jzs161-twin-turbo-vvti-engine-loom-ecu-jdm-2jzgte-2jzgt/